Time difference · Europe/London ↔ Europe/Istanbul
Time difference between London and Istanbul
In short
Istanbul is 2 hours ahead of London for 217 of the next 365 days.
From 1 November 2026 to 27 March 2027 the difference is 3 hours.
When it is 09:00 in London, it is 11:00 in Istanbul.
Computed from IANA tzdb 2026e UTC offsets for Europe/London and Europe/Istanbul.
Data updated
Right now
- London
- --:--
- Istanbul
- --:--
Current local times appear here.
Usual difference
+2 h
Istanbul ahead, 217 of the next 365 days
Through the year
+2 h to +3 h
Istanbul relative to London
Working hours overlap
6 h
09:00–15:00 in London
Straight-line distance
2,495 km
1,551 mi between city centres
How the difference changes over the next 12 months
Positive values mean Istanbul is ahead of London.
| From | Until | Istanbul vs London |
|---|---|---|
| 1 Nov 2026 | 28 Mar 2027 | +3 hchanged |
| 28 Mar 2027 | 31 Oct 2027 | +2 h |
| 31 Oct 2027 | 31 Oct 2027 | +3 hchanged |
Dates are UTC days; clocks change at local times listed below.
When the clocks change
London
Europe/London
Sun, 28 March 2027
At 01:00 clocks go forward 1 hour to 02:00 (BST, UTC+01:00)
Sun, 31 October 2027
At 02:00 clocks go back 1 hour to 01:00 (GMT, UTC+00:00)
Istanbul
Europe/Istanbul
No clock changes in this period.
Hour by hour (+2 h)
At the usual difference. Arrival time = departure time in London + flight time + 2 hours. On dates with a different gap, shift every row by the change.
| London | Istanbul | Both awake / working |
|---|---|---|
| 00:00 | 02:00 | — |
| 01:00 | 03:00 | — |
| 02:00 | 04:00 | — |
| 03:00 | 05:00 | — |
| 04:00 | 06:00 | — |
| 05:00 | 07:00 | — |
| 06:00 | 08:00 | — |
| 07:00 | 09:00 | both awake |
| 08:00 | 10:00 | both awake |
| 09:00 | 11:00 | working hours |
| 10:00 | 12:00 | working hours |
| 11:00 | 13:00 | working hours |
| 12:00 | 14:00 | working hours |
| 13:00 | 15:00 | working hours |
| 14:00 | 16:00 | working hours |
| 15:00 | 17:00 | both awake |
| 16:00 | 18:00 | both awake |
| 17:00 | 19:00 | both awake |
| 18:00 | 20:00 | both awake |
| 19:00 | 21:00 | both awake |
| 20:00 | 22:00 | both awake |
| 21:00 | 23:00 | — |
| 22:00 | 00:00next day | — |
| 23:00 | 01:00next day | — |
Calling and meeting windows
| Difference | Days | Both awake (07–23), London time | Both working (09–17), London time |
|---|---|---|---|
| +2 h | 217 | 07:00–21:00 | 09:00–15:00 |
| +3 h | 148 | 07:00–20:00 | 09:00–14:00 |
What the data shows
Over the next 12 months the gap is 2 hours for 217 days, 3 hours for 148 days, because only London changes its clocks.
How we calculated this: Days per distinct difference across the period.
At the usual difference, 09:00–17:00 working days overlap for 6 hours: 09:00–15:00 in London, 11:00–17:00 in Istanbul.
How we calculated this: Intersection of 09:00–17:00 local in both places at the typical difference.
This page also answers for
These places keep exactly the same clocks over the period, so every number above applies to them too.
Same clock as London
- Lisbon, Portugal
- Dublin, Ireland
- Las Palmas, Spain
- Birmingham, United Kingdom
- Manchester, United Kingdom
- Leeds, United Kingdom
- Porto, Portugal
- Sheffield, United Kingdom
Same clock as Istanbul
- Moscow, Russia
- Baghdad, Iraq
- Riyadh, Saudi Arabia
- Addis Ababa, Ethiopia
- Nairobi, Kenya
- Dar es Salaam, Tanzania
- Aleppo, Syria
- Kuwait City, Kuwait
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